Tire changer jaw holding means



July 7, 1931. C, G, NATHE, JR 1,813,310

TIRE CHANGER JAW HOLDING MEANS Filed Sept. 2l, 1927 @Zar/es (in alz? Patented July 7, f 1,1931* UNiiEn STATES PATENT yoFificze,V

CHARLES G. NATHE, JR., or MINNEAPOLIS, MIIvNnsoTA, AssIGNon- To -MARQUETTE MANUrAc'rUninercoivrrnNY; ofi` s'r. PAIInMINNEsoTm j TIRE CHANGER JAWHoLDINe'ii/IEANS;

The object of my invention is toy provide means for holding the adjustable jaw of a tire changer in adjusted position, such means being of simple, durable and comparatively inexpensive construction. n

WithV this and other objects in view my yinvention consists inthe construction, ar-' holding pin for retaining the rim engaging device or adjustable jaw in a predetermined position upon its arm; and Figure 3 is a hori- Zontal detail sectionalview of the same taken g on the line 33 of Figure 1. s l

I have shown my invention applied to a Vconventional form of tire changer embodying a hollow standard 10 mounted upon a foot piece 12 and having radial arms 18 yand 22, to one of which my invention is ap plied. A tire changer of this general character is usually provided with a single arm 18 and a pair of arms 22. y Y

A jaw fitting C is slidably mounted on the arm 18 and is usually screw-threa-dedly actuated, such as by ascrew-threaded shaft 84 and a crank 96. Y

The arms 22 are mounted upon stubs 54 formed upon a head fitting A by means of bolts 58 and 59 and it is on these 'arms that I mount my invention. j f

Each arm 22 is preferably a casting formed with a pair of side walls 60y and 62 which have inturned vflanges 64 along their upper edges. The flanges k64 form guides yupon which may be slid and guided.

` The wall 60 a plurality 66. The rim engaging and holding device B Y includes ahead element 68 having a pair of channel grooves 7 therein for receiving the rimv engaging and holding devices BV of each'arm is formed with f of horizontally spaced openings j Application med Septante-.21, iea'g'fseriai ne. 220,904'.

ure 2 ofthe drawings.

Ajaw 72 isformed upon onet end o fgthe body 68.` IA vertically projecting rim engagingibar'or surface 74 is formed upon ,the other. GDdO the body The bar 74 which en-l gages a tirerim is j j j near its ,upperr end lwhich"`in'tiirn forms a hook 78. `Each entire yrim engaging and holding device B is slidably mounted upon its arm. l

trolled by a rod 82. The rod 82 projects through slots89aof the boss 89 and through an opening 80a of the locking plug 80`and is connected to a stud84. Afcoil ,spring 86 eX-v tends aroundlthe stud 84 andis'iixedly enpo'sition to'another o'fits positions, asshown byf'do'tted lines/ andarrows 85y in Figur'es2l and 3, rwill cause the'locking plug`80 to be enthe locking plug'tf80` vinto'. one f of the Nope-nvings 66.

formed `with a notch 7 6- guide flanges' A"64 lasclearly illustrated in (sol aged atlone end withl a lug v69 which is fixed tolthe body element 68 and has its other end anchored'around the control rod 8 2 as at 83. `fl`he control ro'd 82 when moved from onek tirely freedfiom any one of the openings 66.

The'control ofvthelcontrol rod 82'is' Y conveniently located adjacent the rim reni gaging: andholding device and is mounted thereon so'i'that 'by shifting vthe position iof the control rodl82an operatoris able `to free thel plug kfro1n yany particular, opening andjtliusallow the entiredevicefB to be slidA longitudinallyupon its arm.

"Although heI Vontrol of arin upon' whichlit is carried, 'is susceptibley of a variety of'embodiinents, vit is'uni'iecessaryto herejdescribe and .illustrate more thany one'form in order tollgive' vafull understanding'of the invention both from its strucj the 'device VB 6r `means whereby it is locked relative-fte thethough other forms may be equally as Well used.

The arms 22 each have a rim engaging and holding device B mounted thereon Which is capableof longitudinal movement upon the arms. Each device B may be locked independently of the other so that onemay be positioned farther from the center "of the machine than the other. The jaw C has parts 68, YOVand 72 similar to the jaw B.-

The devices B after they :are onceset for a practical job, are xed. The jaw C however is manipulated by the crank 96 for 'engaging a tire rim in conjunction with the jaws B so that the riIn can be expande-d or contracted as desired, such engagement occuring with the outer=` faces of the jaws o'r the hooks 72 respectively; K

Ivhave here given a full "explanatioiiof vthe operation of in means for holding the adjustable jaw o a tire changer in 'adjusted position that a clear understanding may be had of my invention both in vregard t'o its" structural and functional details.

Some chang'es may be 'madein the con: struction and arrangei'nent 'of the parts of my device Without .departing from the real spirit -and purpose of my invention, `and `it is my intention to cov'er by my claims, yany modified forms of structure or use of mechanical equivalents,` `which may be reason? abl included Within their scope.

1. In a tire changer, an upright standard, an 'arm projecting therefrom, a ytire engaging device slidah'le on said arm 'and means `to lock the 'device at dilferent positions on said arm, said means comprising a slidable pin selectively cngageab'l'e `wv'it'h a` roy'v ofV spaced openings in said aiin, `an opening in S'a'd pin, a rod having vone vend pivoted to rsaid dovioo ood ao fo'tor ono projooao'g iooooiy through 4said Opening and spring mean'stfo constrain said pin toward engagement yvi't'h' said openings in said arm. A i .l

2. In a tire changer, an 'upright standard, an yairm projecting therefrom, an upstaiding tire engaging device adjustable on said arm and means yto lock the 'de'i'fice 'at different positions on said arm, said means compris ing a slidable pin selectively 'eng'ag'eable With a row of spaced openings on said arm, opening in saidl pin, a rod having one end pivoted to said device and fitsolther end "pfQ# jecting loosely through AsaidV 'opening 'and then extending upwardly lto a positinjadja cent said upsta'nding y'tire 'engaging device and spring means to constrain saidfpin l'tof Wardengagement with said openings 'in said arms. j

Des Moines, Iowa, -Se l'te Ibai?, 1927. CHARLES f NATH-E, `:ha 

